<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>前端开发3231班 36号 刘福vscode</title>
</head>
<body>
  <style>
    span{
      display: inline-block;
      width: 70px;
      height: 40px;
      margin:5px 10px;
      background-color: palegoldenrod;
      border: 1px solid #000;
      text-align: center;
      line-height: 40px;
    }
    div{
      display: inline-block;
      background:url(01.png);
    }
  </style>
  <div>
  <script>
    //在页面上打印出99乘法表
      for(let i=1;i<=9;i++){
        for(let j=1;j<=i;j++){
          document.write(`
          <span>
          ${j}*${i}=${j*i}
          </span>
          `)
        }
        document.write(`<Br>`)
      }
    </script>
  </div>

  <script>
    // let i
    // for(i=0;i<5;i++){
    //   console.log(i)
    // }
    // console.log(i)

    // let i =24
    // for(let i=0;i<10;++i){}
    // console.log(i)

    // let sum =9
    // let arr=[11,22,33]
    // for(let i=0;i<=arr.length;i++){
    //   sum+=arr[i]
    // }
    // console.log(sum)
  </script>
</body>
</html>